ʻO ke ʻano o ke kahe axial, ka mīkini paʻa paʻa paʻa, ka mīkini commutation brushless. ʻO ka mea nui i haku ʻia he rotor waho, he stator i loko, he magnet mau, he commutator uila a me nā ʻāpana ʻē aʻe, no ka mea he liʻiliʻi ka nui rotor waho, liʻiliʻi ka manawa o ka inertia, kiʻekiʻe ka wikiwiki, wikiwiki ka pane. no laila ʻoi aku ka nui o ka mana ma mua o 25% kiʻekiʻe ma mua o ka mīkini rotor i loko.
Hoʻohana ʻia nā motika rotor o waho i nā ʻano noi like ʻole, e komo pū ana akā ʻaʻole i kaupalena ʻia: nā kaʻa uila, nā drones, nā mea hana hale, nā mīkini ʻenehana, a me ka aerospace. ʻO kona kiʻekiʻe mana kiʻekiʻe a me ka hana kiʻekiʻe e hana i nā moto rotor waho i koho mua ma nā kahua he nui, e hāʻawi ana i ka mana mana a me ka hoʻemi ʻana i ka ikehu.